<html>

<head>
    <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.0/jquery.min.js">
    </script>
</head>

<body>
    <!-- 替换为实际的github oauth app client id -->
    <a href="https://github.com/login/oauth/authorize?client_id=<your-client-id>">Login with Github</a>
</body>

</html>